Sanihose removal and reuse

[Reefgeorge]

What are your most successful methods for removing sanihose connections with minimal damage to allow successful leak free reattachment?

Thanks,

George

 

[Cricket]

For us it seams to depend on the type of hose and how old it is. Sometimes if it will come off without too much heat from the heat gun it can be reused.

 

[racclarkson@gmail.com]

What are your most successful methods for removing sanihose connections with minimal damage to allow successful leak free reattachment?

Thanks,

George

Sorta vague, don't you think?

 

[Reefgeorge]

Sorta vague, don't you think?

I am doing maintenance on my vacuflush systems now and my shower sumps afterwards. They all use the thick white sanitation hoses which as we all know are very stiff and difficult to remove and attach from and to the hose barbs. I have read about using hot water, heat guns, flames, fancy hose pliers, etc. and I am wondering what works for you guys, especially if the objective is maintenance without hose replacement. The initial vacuflush project is to address vacuum leaks.

George

 

[racclarkson@gmail.com]

I am doing maintenance on my vacuflush systems now and my shower sumps afterwards. They all use the thick white sanitation hoses which as we all know are very stiff and difficult to remove and attach from and to the hose barbs. I have read about using hot water, heat guns, flames, fancy hose pliers, etc. and I am wondering what works for you guys, especially if the objective is maintenance without hose replacement. The initial vacuflush project is to address vacuum leaks.George

Flames? Tell me more. The white sani hose can’t take a lot of heat—definitely no flames. But I use a heat gun all the time on them. Just warm ‘em gently and only slight twisting action and they’ll come off cleanly. Dish soap or silicone grease for reinstallation. You can twist all you like on a cold hose.

 

[Briankinley2004]

Heat gun in moderation

 

[Reefgeorge]

In my search I saw a picture of someone who had used a torch to soften the hose. It did not end well. I can't find the picture now but it was kinda funny. I eventually mastered bending hard PVC pipe with a torch but I went through many attempts before I got it right. OK so maybe "mastered" is a little generous - got away with it. I was hoping that none of you guys were going to say a torch. A heat gun is much friendlier.

Thanks,



George

 

[racclarkson@gmail.com]

George,

As it happens, I've got another head pump to pull. Since I was in the neighborhood, I pulled the white Sani-hose from two of my head pumps to the overboard/holding tank valves. I've owned Aslan 4-1/2 years, and this is the first time I've messed with those hoses. They came off cleanly as previously described. I was pleased to note there was no scale buildup as well. I treat the head plumbing with white vinegar about twice a year for 12+/- hours--must be the right recipe.

 

[Guy Walters]

Robert can you go into a little more detail on your head vinegar treatment? Do you first flush with fresh water and then just pour the vinegar into the head. We have the same boat, 55C 84. I currently have both the guest and forward head pumps out on my work bench. I was unable to get the large 2" head discharge hoses off the pumps and had to leave them connected to the nose cones. I tried heat, pick, channel locks etc. on the big hoses to no avail. I realize that this is probably OK but since I am doing a complete rebuild and painting of the pumps I would love to get them off. It is almost impossible to reach the hose clamps on the guest discharge. I am considering just replacing both of those large hoses at this time. Any suggestion on what type of hose to use?

Guy Walters
High Point NC
Wrightsville beach NC

 

[racclarkson@gmail.com]

Robert can you go into a little more detail on your head vinegar treatment? Do you first flush with fresh water and then just pour the vinegar into the head. We have the same boat, 55C 84. I currently have both the guest and forward head pumps out on my work bench. I was unable to get the large 2" head discharge hoses off the pumps and had to leave them connected to the nose cones. I tried heat, pick, channel locks etc. on the big hoses to no avail. I realize that this is probably OK but since I am doing a complete rebuild and painting of the pumps I would love to get them off. It is almost impossible to reach the hose clamps on the guest discharge. I am considering just replacing both of those large hoses at this time. Any suggestion on what type of hose to use?

Guy Walters
High Point NC
Wrightsville beach NC

Guy, I shut off the seacock for that unit and just pour the vinegar in (gallon) and flush almost all of it. Let it sit 24 hours or more if possible. Can't use too much and can't leave it too long.

On your hose, I understand the access. I think you need to go back and use more heat. You may find sludge built-up that you'll definitely want to remove--hammer and chisel type sludge. I measured 2-3/8" ID just now on a spare nose cone. I use wet exhaust hose for mine.

 

[Guy Walters]

Thanks Robert. I spent Friday and Saturday in the yoga "down dog" position until I needed assistance to remove me from the bilge. I was successful in re-installing the guest pump with a unit that I rebuilt. It purred like a kitten, sort of. I realized that the closet, which in my case does not have a washer dryer installed, is directly above the large cone on the rear of the guest head pump. I now have a new lifting floor board in the closet. Those vibra-saws are a great invention. Thanks for the tip on the hose. I have been on the internet all day looking for 2 3/8" sanitation hose to no avail. I will turn my attention to wet exhaust hose. The heat gun works pretty good on the smaller hoses and really good on the new smaller hoses but as of yet I am batting zero on being able to remove any of the large hoses. I ended up just cutting them off. I also just purchased one of the Depstech endoscopes that you suggested and received it yesterday, very impressive especially considering the low cost. I wish I had bought one months ago.
Guy

 

[racclarkson@gmail.com]

Thanks Robert. I spent Friday and Saturday in the yoga "down dog" position until I needed assistance to remove me from the bilge. I was successful in re-installing the guest pump with a unit that I rebuilt. It purred like a kitten, sort of. I realized that the closet, which in my case does not have a washer dryer installed, is directly above the large cone on the rear of the guest head pump. I now have a new lifting floor board in the closet. Those vibra-saws are a great invention. Thanks for the tip on the hose. I have been on the internet all day looking for 2 3/8" sanitation hose to no avail. I will turn my attention to wet exhaust hose. The heat gun works pretty good on the smaller hoses and really good on the new smaller hoses but as of yet I am batting zero on being able to remove any of the large hoses. I ended up just cutting them off. I also just purchased one of the Depstech endoscopes that you suggested and received it yesterday, very impressive especially considering the low cost. I wish I had bought one months ago.
Guy

Glad it's working out. The new access panel is awesome.

You really should always use the buddy system when working on these boats.

https://www.youtube.com/watch?v=Ca8W6qyDL9Y

Can you relate?

 

[jim rosenthal]

To install the hose, try putting a cup of water (ceramic cup) in the microwave and get it good and hot. That will soften the hose enough to make it slide on.

 

[racclarkson@gmail.com]

To install the hose, try putting a cup of water (ceramic cup) in the microwave and get it good and hot. That will soften the hose enough to make it slide on.

That works. What I find works best for me is silicone plumber's grease. I've found that, while I have to use heat for hose removal, no heat is needed for new hose installations. The product is also really good to use when replacing waste pump stators and pump impellers on motors and generators.

 

[rustybucket]

I had to rebuild my vacuflush pumps recently and threw all that white crap away. I re-installed black rubberish sanitation hose with wire reinforcement instead. It seems MUCH less likely to kink in radiuses and hopefully it will remain a little more pliable than the white stuff. The hose I removed was as stiff as a tree limb.Not sure how it will hold up long term, but it sure was a LOT easier to install.

To get the old white off, copious amounts of heat gun and a razor knife to slice lightly parallel to hose direction on the fitting. Be sure not to cut deep enough to damage the barb fitting. Make 10 or so slices all around the barb, more heat and they usually come right off.

The white hose goes over the barb and hardens, creating a mechanical connection to the barb, you've got to weaken the structure of the hose to get it over the 'hump'.

I bought the hose locally, but pretty sure this is what I installed
https://www.jamestowndistributors.com/userportal/show_product.do?pid=14456

Pretty neat video on that page describing the differences.